قصة الكتاب :
The Adventure of the Devils Foot is one of the 56 Sherlock Holmes short stories written by Arthur Conan Doyle . It is one of eight stories in the cycle collected as His Last Bow. Doyle ranked The Adventure of the Devils Foot ninth in his list of his twelve favorite Holmes stories . While on vacation in Cornwall, the brilliant consulting detective Sherlock Holmes is asked to investigate a very strange case . A woman named Brenda Tregennis has been found dead at a table in her house . Two of her brothers, George and Owen, are found seated next to her, still alive but completely insane . The dead woman and the mad men all have looks of terror on their faces . A few days later, a third brother, Mortimer Tregennis, is also found dead with the same look of horror on his face .